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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "XULButtonElement.h"
#include "XULMenuParentElement.h"
#include "XULPopupElement.h"
#include "mozilla/Assertions.h"
#include "mozilla/Attributes.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/TextEvents.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/dom/DocumentInlines.h"
#include "mozilla/dom/MouseEventBinding.h"
#include "mozilla/dom/NameSpaceConstants.h"
#include "mozilla/dom/AncestorIterator.h"
#include "mozilla/dom/XULMenuBarElement.h"
#include "nsGkAtoms.h"
#include "nsITimer.h"
#include "nsLayoutUtils.h"
#include "nsCaseTreatment.h"
#include "nsChangeHint.h"
#include "nsMenuPopupFrame.h"
#include "nsPlaceholderFrame.h"
#include "nsPresContext.h"
#include "nsXULPopupManager.h"
#include "nsIDOMXULButtonElement.h"
#include "nsISound.h"
namespace mozilla::dom {
XULButtonElement::XULButtonElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
: nsXULElement(std::move(aNodeInfo)),
mIsAlwaysMenu(IsAnyOfXULElements(nsGkAtoms::menu, nsGkAtoms::menulist,
nsGkAtoms::menuitem)) {}
XULButtonElement::~XULButtonElement() {
StopBlinking();
KillMenuOpenTimer();
}
nsChangeHint XULButtonElement::GetAttributeChangeHint(const nsAtom* aAttribute,
int32_t aModType) const {
if (aAttribute == nsGkAtoms::type &&
IsAnyOfXULElements(nsGkAtoms::button, nsGkAtoms::toolbarbutton)) {
// type=menu switches to a menu frame.
return nsChangeHint_ReconstructFrame;
}
return nsXULElement::GetAttributeChangeHint(aAttribute, aModType);
}
// This global flag is used to record the timestamp when a menu was opened or
// closed and is used to ignore the mousemove and mouseup events that would fire
// on the menu after the mousedown occurred.
static TimeStamp gMenuJustOpenedOrClosedTime = TimeStamp();
void XULButtonElement::PopupOpened() {
if (!IsMenu()) {
return;
}
gMenuJustOpenedOrClosedTime = TimeStamp::Now();
SetAttr(kNameSpaceID_None, nsGkAtoms::open, u"true"_ns, true);
}
void XULButtonElement::PopupClosed(bool aDeselectMenu) {
if (!IsMenu()) {
return;
}
nsContentUtils::AddScriptRunner(
new nsUnsetAttrRunnable(this, nsGkAtoms::open));
if (aDeselectMenu) {
if (RefPtr<XULMenuParentElement> parent = GetMenuParent()) {
if (parent->GetActiveMenuChild() == this) {
parent->SetActiveMenuChild(nullptr);
}
}
}
}
bool XULButtonElement::IsMenuActive() const {
if (XULMenuParentElement* menu = GetMenuParent()) {
return menu->GetActiveMenuChild() == this;
}
return false;
}
void XULButtonElement::HandleEnterKeyPress(WidgetEvent& aEvent) {
if (IsDisabled()) {
#ifdef XP_WIN
if (XULPopupElement* popup = GetContainingPopupElement()) {
if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
pm->HidePopup(
popup, {HidePopupOption::HideChain, HidePopupOption::DeselectMenu,
HidePopupOption::Async});
}
}
#endif
return;
}
if (IsMenuPopupOpen()) {
return;
}
// The enter key press applies to us.
if (IsMenuItem()) {
ExecuteMenu(aEvent);
} else {
OpenMenuPopup(true);
}
}
bool XULButtonElement::IsMenuPopupOpen() {
nsMenuPopupFrame* popupFrame = GetMenuPopup(FlushType::None);
return popupFrame && popupFrame->IsOpen();
}
bool XULButtonElement::IsOnMenu() const {
auto* popup = XULPopupElement::FromNodeOrNull(GetMenuParent());
return popup && popup->IsMenu();
}
bool XULButtonElement::IsOnMenuList() const {
if (XULMenuParentElement* menu = GetMenuParent()) {
return menu->GetParent() &&
menu->GetParent()->IsXULElement(nsGkAtoms::menulist);
}
return false;
}
bool XULButtonElement::IsOnMenuBar() const {
if (XULMenuParentElement* menu = GetMenuParent()) {
return menu->IsMenuBar();
}
return false;
}
nsMenuPopupFrame* XULButtonElement::GetContainingPopupWithoutFlushing() const {
if (XULPopupElement* popup = GetContainingPopupElement()) {
return do_QueryFrame(popup->GetPrimaryFrame());
}
return nullptr;
}
XULPopupElement* XULButtonElement::GetContainingPopupElement() const {
return XULPopupElement::FromNodeOrNull(GetMenuParent());
}
bool XULButtonElement::IsOnContextMenu() const {
if (nsMenuPopupFrame* popup = GetContainingPopupWithoutFlushing()) {
return popup->IsContextMenu();
}
return false;
}
void XULButtonElement::ToggleMenuState() {
if (IsMenuPopupOpen()) {
CloseMenuPopup(false);
} else {
OpenMenuPopup(false);
}
}
void XULButtonElement::KillMenuOpenTimer() {
if (mMenuOpenTimer) {
mMenuOpenTimer->Cancel();
mMenuOpenTimer = nullptr;
}
}
void XULButtonElement::OpenMenuPopup(bool aSelectFirstItem) {
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (!pm) {
return;
}
pm->KillMenuTimer();
if (!pm->MayShowMenu(this)) {
return;
}
if (RefPtr<XULMenuParentElement> parent = GetMenuParent()) {
parent->SetActiveMenuChild(this);
}
// Open the menu asynchronously.
OwnerDoc()->Dispatch(NS_NewRunnableFunction(
"AsyncOpenMenu", [self = RefPtr{this}, aSelectFirstItem] {
if (self->GetMenuParent() && !self->IsMenuActive()) {
return;
}
if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
pm->ShowMenu(self, aSelectFirstItem);
}
}));
}
void XULButtonElement::CloseMenuPopup(bool aDeselectMenu) {
gMenuJustOpenedOrClosedTime = TimeStamp::Now();
// Close the menu asynchronously
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (!pm) {
return;
}
if (auto* popup = GetMenuPopupContent()) {
HidePopupOptions options{HidePopupOption::Async};
if (aDeselectMenu) {
options += HidePopupOption::DeselectMenu;
}
pm->HidePopup(popup, options);
}
}
int32_t XULButtonElement::MenuOpenCloseDelay() const {
if (IsOnMenuBar()) {
return 0;
}
return LookAndFeel::GetInt(LookAndFeel::IntID::SubmenuDelay, 300); // ms
}
void XULButtonElement::ExecuteMenu(Modifiers aModifiers, int16_t aButton,
bool aIsTrusted) {
MOZ_ASSERT(IsMenu());
StopBlinking();
auto menuType = GetMenuType();
if (NS_WARN_IF(!menuType)) {
return;
}
// Because the command event is firing asynchronously, a flag is needed to
// indicate whether user input is being handled. This ensures that a popup
// window won't get blocked.
const bool userinput = dom::UserActivation::IsHandlingUserInput();
// Flip "checked" state if we're a checkbox menu, or an un-checked radio menu.
bool needToFlipChecked = false;
if (*menuType == MenuType::Checkbox ||
(*menuType == MenuType::Radio && !GetXULBoolAttr(nsGkAtoms::checked))) {
needToFlipChecked = !AttrValueIs(kNameSpaceID_None, nsGkAtoms::autocheck,
nsGkAtoms::_false, eCaseMatters);
}
mDelayedMenuCommandEvent = new nsXULMenuCommandEvent(
this, aIsTrusted, aModifiers, userinput, needToFlipChecked, aButton);
StartBlinking();
}
void XULButtonElement::StopBlinking() {
if (mMenuBlinkTimer) {
if (auto* parent = GetMenuParent()) {
parent->LockMenuUntilClosed(false);
}
mMenuBlinkTimer->Cancel();
mMenuBlinkTimer = nullptr;
}
mDelayedMenuCommandEvent = nullptr;
}
void XULButtonElement::PassMenuCommandEventToPopupManager() {
if (mDelayedMenuCommandEvent) {
if (RefPtr<nsXULPopupManager> pm = nsXULPopupManager::GetInstance()) {
RefPtr<nsXULMenuCommandEvent> event = std::move(mDelayedMenuCommandEvent);
nsCOMPtr<nsIContent> content = this;
pm->ExecuteMenu(content, event);
}
}
mDelayedMenuCommandEvent = nullptr;
}
static constexpr int32_t kBlinkDelay = 67; // milliseconds
void XULButtonElement::StartBlinking() {
if (!LookAndFeel::GetInt(LookAndFeel::IntID::ChosenMenuItemsShouldBlink)) {
PassMenuCommandEventToPopupManager();
return;
}
// Blink off.
UnsetAttr(kNameSpaceID_None, nsGkAtoms::menuactive, true);
if (auto* parent = GetMenuParent()) {
// Make this menu ignore events from now on.
parent->LockMenuUntilClosed(true);
}
// Set up a timer to blink back on.
NS_NewTimerWithFuncCallback(
getter_AddRefs(mMenuBlinkTimer),
[](nsITimer*, void* aClosure) MOZ_CAN_RUN_SCRIPT_BOUNDARY {
RefPtr self = static_cast<XULButtonElement*>(aClosure);
if (auto* parent = self->GetMenuParent()) {
if (parent->GetActiveMenuChild() == self) {
// Restore the highlighting if we're still the active item.
self->SetAttr(kNameSpaceID_None, nsGkAtoms::menuactive, u"true"_ns,
true);
}
}
// Reuse our timer to actually execute.
self->mMenuBlinkTimer->InitWithNamedFuncCallback(
[](nsITimer*, void* aClosure) MOZ_CAN_RUN_SCRIPT_BOUNDARY {
RefPtr self = static_cast<XULButtonElement*>(aClosure);
if (auto* parent = self->GetMenuParent()) {
parent->LockMenuUntilClosed(false);
}
self->PassMenuCommandEventToPopupManager();
self->StopBlinking();
},
aClosure, kBlinkDelay, nsITimer::TYPE_ONE_SHOT,
"XULButtonElement::ContinueBlinking");
},
this, kBlinkDelay, nsITimer::TYPE_ONE_SHOT,
"XULButtonElement::StartBlinking", GetMainThreadSerialEventTarget());
}
void XULButtonElement::UnbindFromTree(UnbindContext& aContext) {
StopBlinking();
nsXULElement::UnbindFromTree(aContext);
}
void XULButtonElement::ExecuteMenu(WidgetEvent& aEvent) {
MOZ_ASSERT(IsMenu());
if (nsCOMPtr<nsISound> sound = do_GetService("@mozilla.org/sound;1")) {
sound->PlayEventSound(nsISound::EVENT_MENU_EXECUTE);
}
Modifiers modifiers = 0;
if (WidgetInputEvent* inputEvent = aEvent.AsInputEvent()) {
modifiers = inputEvent->mModifiers;
}
int16_t button = 0;
if (WidgetMouseEventBase* mouseEvent = aEvent.AsMouseEventBase()) {
button = mouseEvent->mButton;
}
ExecuteMenu(modifiers, button, aEvent.IsTrusted());
}
void XULButtonElement::PostHandleEventForMenus(
EventChainPostVisitor& aVisitor) {
auto* event = aVisitor.mEvent;
if (event->mOriginalTarget != this) {
return;
}
if (auto* parent = GetMenuParent()) {
if (NS_WARN_IF(parent->IsLocked())) {
return;
}
}
// If a menu just opened, ignore the mouseup event that might occur after a
// the mousedown event that opened it. However, if a different mousedown event
// occurs, just clear this flag.
if (!gMenuJustOpenedOrClosedTime.IsNull()) {
if (event->mMessage == eMouseDown) {
gMenuJustOpenedOrClosedTime = TimeStamp();
} else if (event->mMessage == eMouseUp) {
return;
}
}
if (event->mMessage == eKeyPress && !IsDisabled()) {
WidgetKeyboardEvent* keyEvent = event->AsKeyboardEvent();
uint32_t keyCode = keyEvent->mKeyCode;
#ifdef XP_MACOSX
// On mac, open menulist on either up/down arrow or space (w/o Cmd pressed)
if (!IsMenuPopupOpen() &&
((keyEvent->mCharCode == ' ' && !keyEvent->IsMeta()) ||
(keyCode == NS_VK_UP || keyCode == NS_VK_DOWN))) {
// When pressing space, don't open the menu if performing an incremental
// search.
if (keyEvent->mCharCode != ' ' ||
!nsMenuPopupFrame::IsWithinIncrementalTime(keyEvent->mTimeStamp)) {
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
OpenMenuPopup(false);
}
}
#else
// On other platforms, toggle menulist on unmodified F4 or Alt arrow
if ((keyCode == NS_VK_F4 && !keyEvent->IsAlt()) ||
((keyCode == NS_VK_UP || keyCode == NS_VK_DOWN) && keyEvent->IsAlt())) {
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
ToggleMenuState();
}
#endif
} else if (event->mMessage == eMouseDown &&
event->AsMouseEvent()->mButton == MouseButton::ePrimary &&
#ifdef XP_MACOSX
// On mac, ctrl-click will send a context menu event from the
// widget, so we don't want to bring up the menu.
!event->AsMouseEvent()->IsControl() &&
#endif
!IsDisabled() && !IsMenuItem()) {
// The menu item was selected. Bring up the menu.
// We have children.
// Don't prevent the default action here, since that will also cancel
// potential drag starts.
if (!IsOnMenu()) {
ToggleMenuState();
} else if (!IsMenuPopupOpen()) {
OpenMenuPopup(false);
}
} else if (event->mMessage == eMouseUp && IsMenuItem() && !IsDisabled() &&
!event->mFlags.mMultipleActionsPrevented) {
// We accept left and middle clicks on all menu items to activate the item.
// On context menus we also accept right click to activate the item, because
// right-clicking on an item in a context menu cannot open another context
// menu.
bool isMacCtrlClick = false;
#ifdef XP_MACOSX
isMacCtrlClick = event->AsMouseEvent()->mButton == MouseButton::ePrimary &&
event->AsMouseEvent()->IsControl();
#endif
bool clickMightOpenContextMenu =
event->AsMouseEvent()->mButton == MouseButton::eSecondary ||
isMacCtrlClick;
if (!clickMightOpenContextMenu || IsOnContextMenu()) {
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
ExecuteMenu(*event);
}
} else if (event->mMessage == eContextMenu && IsOnContextMenu() &&
!IsMenuItem() && !IsDisabled()) {
// Make sure we cancel default processing of the context menu event so
// that it doesn't bubble and get seen again by the popuplistener and show
// another context menu.
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
} else if (event->mMessage == eMouseOut) {
KillMenuOpenTimer();
if (RefPtr<XULMenuParentElement> parent = GetMenuParent()) {
if (parent->GetActiveMenuChild() == this) {
// Deactivate the menu on mouse out in some cases...
const bool shouldDeactivate = [&] {
if (IsMenuPopupOpen()) {
// If we're open we never deselect. PopupClosed will do as needed.
return false;
}
if (auto* menubar = XULMenuBarElement::FromNode(*parent)) {
// De-select when exiting a menubar item, if the menubar wasn't
// activated by keyboard.
return !menubar->IsActiveByKeyboard();
}
if (IsOnMenuList()) {
// Don't de-select if on a menu-list. That matches Chromium and our
return false;
}
// De-select elsewhere.
return true;
}();
if (shouldDeactivate) {
parent->SetActiveMenuChild(nullptr);
}
}
}
} else if (event->mMessage == eMouseMove && (IsOnMenu() || IsOnMenuBar())) {
// Use a tolerance to address situations where a user might perform a
// "wiggly" click that is accompanied by near-simultaneous mousemove events.
const TimeDuration kTolerance = TimeDuration::FromMilliseconds(200);
if (!gMenuJustOpenedOrClosedTime.IsNull() &&
gMenuJustOpenedOrClosedTime + kTolerance < TimeStamp::Now()) {
gMenuJustOpenedOrClosedTime = TimeStamp();
return;
}
if (IsDisabled() && IsOnMenuList()) {
return;
}
RefPtr<XULMenuParentElement> parent = GetMenuParent();
MOZ_ASSERT(parent, "How did IsOnMenu{,Bar} return true then?");
const bool isOnOpenMenubar =
parent->IsMenuBar() && parent->GetActiveMenuChild() &&
parent->GetActiveMenuChild()->IsMenuPopupOpen();
parent->SetActiveMenuChild(this);
// We need to check if we really became the current menu item or not.
if (!IsMenuActive()) {
// We didn't (presumably because a context menu was active)
return;
}
if (IsDisabled() || IsMenuItem() || IsMenuPopupOpen() || mMenuOpenTimer) {
// Disabled, or already opening or what not.
return;
}
if (parent->IsMenuBar() && !isOnOpenMenubar) {
// We should only open on hover in the menubar iff the menubar is open
// already.
return;
}
// A timer is used so that it doesn't open if the user moves the mouse
// quickly past the menu. The MenuOpenCloseDelay ensures that only menus
// have this behaviour.
NS_NewTimerWithFuncCallback(
getter_AddRefs(mMenuOpenTimer),
[](nsITimer*, void* aClosure) MOZ_CAN_RUN_SCRIPT_BOUNDARY {
RefPtr self = static_cast<XULButtonElement*>(aClosure);
self->mMenuOpenTimer = nullptr;
if (self->IsMenuPopupOpen()) {
return;
}
// make sure we didn't open a context menu in the meantime
// (i.e. the user right-clicked while hovering over a submenu).
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (!pm) {
return;
}
if (pm->HasContextMenu(nullptr) && !self->IsOnContextMenu()) {
return;
}
if (!self->IsMenuActive()) {
return;
}
self->OpenMenuPopup(false);
},
this, MenuOpenCloseDelay(), nsITimer::TYPE_ONE_SHOT,
"XULButtonElement::OpenMenu", GetMainThreadSerialEventTarget());
}
}
nsresult XULButtonElement::PostHandleEvent(EventChainPostVisitor& aVisitor) {
if (aVisitor.mEventStatus == nsEventStatus_eConsumeNoDefault) {
return nsXULElement::PostHandleEvent(aVisitor);
}
if (IsMenu()) {
PostHandleEventForMenus(aVisitor);
return nsXULElement::PostHandleEvent(aVisitor);
}
auto* event = aVisitor.mEvent;
switch (event->mMessage) {
case eBlur: {
Blurred();
break;
}
case eKeyDown: {
WidgetKeyboardEvent* keyEvent = event->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (keyEvent->ShouldWorkAsSpaceKey() && aVisitor.mPresContext) {
EventStateManager* esm = aVisitor.mPresContext->EventStateManager();
// :hover:active state
esm->SetContentState(this, ElementState::HOVER);
esm->SetContentState(this, ElementState::ACTIVE);
mIsHandlingKeyEvent = true;
}
break;
}
// On mac, Return fires the default button, not the focused one.
#ifndef XP_MACOSX
case eKeyPress: {
WidgetKeyboardEvent* keyEvent = event->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_RETURN == keyEvent->mKeyCode) {
if (RefPtr<nsIDOMXULButtonElement> button = AsXULButton()) {
if (OnPointerClicked(*keyEvent)) {
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
}
}
}
break;
}
#endif
case eKeyUp: {
WidgetKeyboardEvent* keyEvent = event->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (keyEvent->ShouldWorkAsSpaceKey()) {
mIsHandlingKeyEvent = false;
ElementState buttonState = State();
if (buttonState.HasAllStates(ElementState::ACTIVE |
ElementState::HOVER) &&
aVisitor.mPresContext) {
// return to normal state
EventStateManager* esm = aVisitor.mPresContext->EventStateManager();
esm->SetContentState(nullptr, ElementState::ACTIVE);
esm->SetContentState(nullptr, ElementState::HOVER);
if (OnPointerClicked(*keyEvent)) {
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
}
}
}
break;
}
case ePointerClick: {
WidgetMouseEvent* mouseEvent = event->AsMouseEvent();
if (mouseEvent->IsLeftClickEvent()) {
if (OnPointerClicked(*mouseEvent)) {
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
}
}
break;
}
default:
break;
}
return nsXULElement::PostHandleEvent(aVisitor);
}
void XULButtonElement::Blurred() {
ElementState buttonState = State();
if (mIsHandlingKeyEvent &&
buttonState.HasAllStates(ElementState::ACTIVE | ElementState::HOVER)) {
// Return to normal state
if (nsPresContext* pc = OwnerDoc()->GetPresContext()) {
EventStateManager* esm = pc->EventStateManager();
esm->SetContentState(nullptr, ElementState::ACTIVE);
esm->SetContentState(nullptr, ElementState::HOVER);
}
}
mIsHandlingKeyEvent = false;
}
bool XULButtonElement::OnPointerClicked(WidgetGUIEvent& aEvent) {
// Don't execute if we're disabled.
if (IsDisabled() || !IsInComposedDoc()) {
return false;
}
// Have the content handle the event, propagating it according to normal DOM
// rules.
RefPtr<mozilla::PresShell> presShell = OwnerDoc()->GetPresShell();
if (!presShell) {
return false;
}
// Execute the oncommand event handler.
WidgetInputEvent* inputEvent = aEvent.AsInputEvent();
WidgetMouseEventBase* mouseEvent = aEvent.AsMouseEventBase();
WidgetKeyboardEvent* keyEvent = aEvent.AsKeyboardEvent();
// TODO: Set aSourceEvent?
nsContentUtils::DispatchXULCommand(
this, aEvent.IsTrusted(), /* aSourceEvent = */ nullptr, presShell,
inputEvent->IsControl(), inputEvent->IsAlt(), inputEvent->IsShift(),
inputEvent->IsMeta(),
mouseEvent ? mouseEvent->mInputSource
: (keyEvent ? MouseEvent_Binding::MOZ_SOURCE_KEYBOARD
: MouseEvent_Binding::MOZ_SOURCE_UNKNOWN),
mouseEvent ? mouseEvent->mButton : 0);
return true;
}
bool XULButtonElement::IsMenu() const {
if (mIsAlwaysMenu) {
return true;
}
return IsAnyOfXULElements(nsGkAtoms::button, nsGkAtoms::toolbarbutton) &&
AttrValueIs(kNameSpaceID_None, nsGkAtoms::type, nsGkAtoms::menu,
eCaseMatters);
}
void XULButtonElement::UncheckRadioSiblings() {
MOZ_ASSERT(!nsContentUtils::IsSafeToRunScript());
MOZ_ASSERT(GetMenuType() == Some(MenuType::Radio));
nsAutoString groupName;
GetAttr(nsGkAtoms::name, groupName);
nsIContent* parent = GetParent();
if (!parent) {
return;
}
auto ShouldUncheck = [&](const nsIContent& aSibling) {
const auto* button = XULButtonElement::FromNode(aSibling);
if (!button || button->GetMenuType() != Some(MenuType::Radio)) {
return false;
}
if (const auto* attr = button->GetParsedAttr(nsGkAtoms::name)) {
if (!attr->Equals(groupName, eCaseMatters)) {
return false;
}
} else if (!groupName.IsEmpty()) {
return false;
}
// we're in the same group, only uncheck if we're checked (for some reason,
// some tests rely on that specifically).
return button->GetXULBoolAttr(nsGkAtoms::checked);
};
for (nsIContent* child = parent->GetFirstChild(); child;
child = child->GetNextSibling()) {
if (child == this || !ShouldUncheck(*child)) {
continue;
}
child->AsElement()->UnsetAttr(nsGkAtoms::checked, IgnoreErrors());
}
}
void XULButtonElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aSubjectPrincipal,
bool aNotify) {
nsXULElement::AfterSetAttr(aNamespaceID, aName, aValue, aOldValue,
aSubjectPrincipal, aNotify);
if (IsAlwaysMenu() && aNamespaceID == kNameSpaceID_None) {
// We need to uncheck radio siblings when we're a checked radio and switch
// groups, or become checked.
const bool shouldUncheckSiblings = [&] {
if (aName == nsGkAtoms::type || aName == nsGkAtoms::name) {
return *GetMenuType() == MenuType::Radio &&
GetXULBoolAttr(nsGkAtoms::checked);
}
if (aName == nsGkAtoms::checked && aValue &&
aValue->Equals(nsGkAtoms::_true, eCaseMatters)) {
return *GetMenuType() == MenuType::Radio;
}
return false;
}();
if (shouldUncheckSiblings) {
UncheckRadioSiblings();
}
}
}
auto XULButtonElement::GetMenuType() const -> Maybe<MenuType> {
if (!IsAlwaysMenu()) {
return Nothing();
}
static Element::AttrValuesArray values[] = {nsGkAtoms::checkbox,
nsGkAtoms::radio, nullptr};
switch (FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::type, values,
eCaseMatters)) {
case 0:
return Some(MenuType::Checkbox);
case 1:
return Some(MenuType::Radio);
default:
return Some(MenuType::Normal);
}
}
XULMenuBarElement* XULButtonElement::GetMenuBar() const {
if (!IsMenu()) {
return nullptr;
}
return FirstAncestorOfType<XULMenuBarElement>();
}
XULMenuParentElement* XULButtonElement::GetMenuParent() const {
if (IsXULElement(nsGkAtoms::menulist)) {
return nullptr;
}
return FirstAncestorOfType<XULMenuParentElement>();
}
XULPopupElement* XULButtonElement::GetMenuPopupContent() const {
if (!IsMenu()) {
return nullptr;
}
for (auto* child = GetFirstChild(); child; child = child->GetNextSibling()) {
if (auto* popup = XULPopupElement::FromNode(child)) {
return popup;
}
}
return nullptr;
}
nsMenuPopupFrame* XULButtonElement::GetMenuPopupWithoutFlushing() const {
return const_cast<XULButtonElement*>(this)->GetMenuPopup(FlushType::None);
}
nsMenuPopupFrame* XULButtonElement::GetMenuPopup(FlushType aFlushType) {
RefPtr popup = GetMenuPopupContent();
if (!popup) {
return nullptr;
}
return do_QueryFrame(popup->GetPrimaryFrame(aFlushType));
}
bool XULButtonElement::OpenedWithKey() const {
auto* menubar = GetMenuBar();
return menubar && menubar->IsActiveByKeyboard();
}
} // namespace mozilla::dom